It is a permanent answer (mostly), and that is something very important to multiplayer Magic
Invasion of Vrynn: Four mana for this many cards is pretty standard, and getting a one-shot copy effect on the other side is tasty
This bad lady is pretty strong for instant/sorcery matters builds, it's a Wizard for your party, and works well even with a simple Brainstorm or Ponder and scales up from there
The eight-mana sorcery has been banned since the formation of the EDH Rules Committee in April 2005, so this will be the first time most Commander players ever interact with the card
It's also a card draw engine because you're likely to be using this card to quest or challenge each turn anyway
In short, people will buy lots of this set, and the prices might actually end up being fairly cheaper for the regular versions of cards